Many modern electronic devices have multiple internal voltages and sources of external power. Common voltages for electronics are 5 V, 3.3 V, 1.8 V, etc. Many modern gadgets also have various sources of power to charge their batteries including USB.[1] Power management IC is a generic term for a class of integrated circuits, that perform the various functions related to the power requirements. A PMIC may have one or more of the following functions:[2]
DC to DC conversion
Battery charging
Power-source selection
Voltage scaling
Power sequencing
Miscellaneous functions
